Girard Tankless Water Heater III - Error E7
Hey folks. TLDR: Getting an E7 error code on our tankless water heater, except sometimes it's an E1 code and sometimes it's an E2 code. What's the problem and how do we fix it? We've been using our water heater with no problem as full-timers for almost 4 years. Finally, we moved out of the trailer and winterized it for the first time. We used an air compressor to blow it out as recommended and left for a few months. Now we're back in the trailer for a month and suddenly, for the first time, it's not working. We got the water hooked up and ran everything through the lines but when we switched on the water heater, it threw us E7. We tried turning it off and back on again, cleared the propane lines by running the stove and the furnace, and everything else is working great. The water heater kept throwing E7, except a few times that it would start working and get hot, and then suddenly throw an E7 again. Sometimes it throws an E1 or E2 instead of an E7, but it seems random. We've been testing it periodically by turning on the hot water and getting these different codes every time. Obviously, something is going on with the propane connection or flow that is preventing or stalling ignition, but since the error codes are vague, I don't know how to fix it, aside from ordering a new part (some kind of valve?) and taking it all apart, which I really don't want to do. Has anyone else had a similar problem? Any troubleshooting or fix suggestions? Thanks in advance.
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